Effect of optimized application of nitrogen on nitrogen volatilization in Nicotiana tobacum shoots at rapid growth and maturity stages Relationship between contents in "Qinyou2" rape and population dynamics of Myzus persicae Effects of microelements fertilizer ratio on growth of aconite daughter root Effects of microelements fertilizer ratio on growth of aconite daughter root Studies on Fertilization Effect and Fertilizer Formula Screen for Calenduld officinalis L. Studies on Fertilization Effect and Fertilizer Formula Screen for Calenduld officinalis L. Starch Gelatinization and Retrogradation Properties under different Basic Fertilizer Regimes and Nitrogen Topdressing at Jointing Stage of Waxy Maize Effects of Basic Fertilizer Treatments and Nitrogen Topdressing at Joint-ing Stage on Starch RVA Characteristics of Waxy Maize Relationship between contents in "Qinyou2" rape and pterygote rate of Lipahis erysimi